Plot synopsis: Here, as a welder, Dong-ryeol endures difficult tasks well. Director Park and Dong-ryeol are half-brothers, living in the midst of conflicting interests and conflicts. The anecdote unfolds such as the wisdom and wisdom of Jiang Kang, who has lived with iron for 40 years, the fighting spirit and perseverance of director Park, who leads the front line, and Chairman Chung, the group's head, who encourages the president suffering from occupational diseases. is made One day, when a strong wind blows, the jackets are loaded, but due to the strong wind, they cannot land on the barge and only Dong-ryeol and Park are left on the barge. Here, Dong-ryeol and the manager are relieved of the emotions they have accumulated while fighting nature, and the huge jacket can enter Jubail Port for a 6,300-mile voyage.